Andy Warhol’s estate has fired a preemptive legal strike at a photographer who believes the legendary artist violated copyright law by hijacking a photo she shot of Prince in 1981. The estate filed a lawsuit Friday against Lynn Goldsmith in Manhattan federal court.

Images of Prince included in court documents filed by the Andy Warhol Foundation.

Warhol painted a series of Prince portraits in 1984 — and, according to the suit, he “drew inspiration from and transformed a publicity photograph of the artist [taken by Goldsmith] that was in circulation at the time.”

The estate alleges Goldsmith is grumbling “more than 30 years after” Warhol created his paintings that the works violate her copyright, and the suit aims to “protect Warhol’s legacy.”

“Although Warhol often used photographs taken by others as inspiration for his portraits, Warhol’s works were entirely new creations,” attorney Luke Nikas says in the complaint.

Nikas also says Warhol’s portraits are a legally protected fair use and, “Defendants have attempted to extort a settlement from the Foundation.”